$(function(){
    $('.content-right').append('<iframe class="content-right-src" name="myIfame" src="http://www.baidu.com" />');
    $('.list-title').click(function(){
        var ddlist = $(this).nextAll("dd");
        var ddindex = $(ddlist[0]);
        if('none'==ddindex.css('display')){
            for(var i=0;i<ddlist.length;i++){
                $(ddlist[i]).css('display','block');
            }
        }else{
            for(var i=0;i<ddlist.length;i++){
                $(ddlist[i]).css('display','none');
            }
        }
    })
});